Railroad-tie.



No. 777,882. PATENTED DEC. 20, 1904. R. B. CAMPBELL.

RAILROAD TIE.

l APPLICATION FILED JUNE 20,1904.

N0 MODEL.

PATENTBD DEG. 2o, 1904..v

R. B, CAMPBELL.

RAILROAD TIB.

APPLIUATION FILED JUNE zo, 1904.

2 SHEETS-SHEET 2V NO MODEL.

UNITED STATES Patented December 20, 1904.

PATENT OEEIcEo ROBERT B. CAMPBELL, OF JOLIET, ILLINOIS, ASSIGNOR OFONE-HALF TO ALEXANDER F. BANKS, OF CHICAGO, ILLINOIS.

RAILROAD-TIE.

SPECIFICATION forming part of Letters Patent No. 777,882, dated December20, 1904.

Application filed June 20, 1904. Serial No. 213,309.

To all whom it may concer-71,:

Be it known that I, ROBERT B. CAMPBELL, a citizen of the United States,residing at Joliet, in the county of Will and State of Illinois, haveinvented certain new and useful Improvements in Railroad-Ties, of whichthe following is a specification, reference being had to theaccompanying drawings.

My invention relates to railroad-ties; and its object is to provide anew and improved combined metal and cement or concrete tie.

In the drawings, Figure 1 is a top or plan view of two of the ties,showing rails supported thereon. Fig. 2 is a side elevation of one ofthe ties, partially in vertical section. Fig. 3 is a top or plan view ofa horizontal longitudinal section of the tie. Fig. L1 is an enlargeddetail, being a section on line 4 4 of Fig. 2. Fig. 5 is a horizontallongitudinal section showing wire-netting cross-plates i-nstead ofordinary perforated metal plates. Fig. 6 is a cross-section on line 6 6of Fig. 5. Fig/7 is a modification, being a longitudinal horizontalsection and showing a wire-netting strengthening-tube with wire-nettingcross-plates; and Fig. 8 is a modification, being a section on line 8 8of Fig. 7.

Referring to the drawings, 9 indicates the cement or concrete body ofthe tie. 10 indicates a cylindrical metal tube, preferably of steel,which is surrounded by a meshed tube 11, which is preferably formed ofsteel-wire netting. The steel tube 1() and meshed tube 11 are slottedhorizontally to provide for the insertion of perforated plates 12, whichare separated from one another substantially the width of the track. Themeshed tube 11 being placed around the tube 10 and the perforated plates12 being placed in position, the concrete body 9 is formed around thecentral core, composed of the tube 10, meshed tube 11, and plates 12.The object and purpose of the meshed tubing and of theperforated platesis to provide a firm binding for the cement, the cement entering themeshes of the netting and perforations of the plates and binding thewhole firmly together.

The top surface of the tie is provided with suitable recesses separatedfrom one another the width of the track, into which are inserted metalplates 13, the upper surface of which is preferably flush with thesurface of the concrete 9. The plates 13 are provided with suitableopenings for the passage of the bolts hereinafter described.

14 indicates rails, which are laid upon the surface of the tie, restingupon the plates 13 and held in position by clips 15 and bolts 16. whichare, as best shown in Fig. 2, U-shaped and secured by nuts 17 upon theirupper ends. 60 The rails, however, may be secured to the track in anyother appropriate manner. As the object of using the meshed cylindricaltube and the perforated plates is, as has been said, to cause the cementto enterv the meshes and perforations and to bind the structuretogether, instead of an imperforate tube 10, surrounded by a meshedtube, a strong tube composed of meshed wire-netting alone may be used,and this form I have illustrated in the modification shown in Figs. 7and 8, in which 9 indicates the concrete body of the tie.

18 indicates a tube formed of strong' Wirenetting, preferably of steelwire, and perforated to receive plates 19, which extend through the tube18 horizontally a distance apart equal to the width of the track andwhich are composed of strong wire-netting, preferably formed of steelwire. In Figs. 5 and 6 I have shown such plates used with the 8O steeltube 10 and surrounded by a wire-netting 11 in place of the ordinaryperforated plates shown in Figs. 2, 3, and 11.

I have described the body of the tie as composed of concrete or cement,and it is preferable to so construct it; but I of course do not confinemyself to the use of concrete or cement strictly, as any equivalentplastic material could be used without departing from my invention.

That which I claim as my invention, and desire to secure by LettersPatent, is-

1. A railroad-tie, composed of a body of plastic material, an interiorstrengtheningcore extending longitudinally of said body and 95 adaptedto engage and bind said body, and perforated cross-plates passingthrough said core transversely thereof and set apart sub'- stantiall ythe Width of the track, substantially as described.

2. A railroad-tie, composed of a body ot' plastic material, an interiorstrengtheningcore extendinglongitudinally of said body and adapted toengage and bind said body, perforated cross-plates passing through saidcore transverselythereot` and set apart substantially the Width of thetrack, and rail-support ing tie-plates sunk in the upper surface of saidbody, substantially as described.

3. A railroad-tie, composed of an interior metallic core, as a steeltube, a Wire-mesh tube surrounding` said core, and a body of plasticmaterial, substantially as described.

4. A railroad-tie, composed oli' an interior metallic core, as a Steeltube, a Wire-mesh tube surrounding said core, perforated cross-platespassing through said core and said Wire-mesh tube transversely thereofand set apart substantially the width of a railroad-tie, and a body ofplastic material, substantially as described.

5. A railroad-tie, composed of an interior metallic core, as a steeltube, provided With transverse slots separated by substantially theWidth of the track, a Wire-mesh tube surrounding said metallic core,perforated cross-plates passing transversely through said slots, a bodyof plastic material, and rail-supporting tieplates in the upper surfaceof said body, substantially as described.

ROBERT B. CAMPBELL.

Witnesses:

OSCAR F. CLARK, A. H. VVnsTiuiLL.l

